set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR Cortex-M4)
set(TOOLCHAIN_PREFIX arm-none-eabi-)

set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}gcc)
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}g++)
set(CMAKE_ASM_COMPILER ${TOOLCHAIN_PREFIX}gcc)
set(CMAKE_AR ${TOOLCHAIN_PREFIX}ar)
set(CMAKE_OBJCOPY ${TOOLCHAIN_PREFIX}objcopy)
set(CMAKE_OBJDUMP ${TOOLCHAIN_PREFIX}objdump)
set(CMAKE_SIZE_UTIL ${TOOLCHAIN_PREFIX}size)

set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)



add_compile_options(
    -mcpu=cortex-m4
    -mthumb
    -mfpu=fpv4-sp-d16
    -mfloat-abi=hard

    -fdata-sections
    -ffunction-sections
    -fdelete-null-pointer-checks

    $<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>
    $<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>
    $<$<COMPILE_LANGUAGE:CXX>:-fno-threadsafe-statics>

    -fmax-errors=1
    -Wall
)

add_link_options(
    -mcpu=cortex-m4
    -mthumb
    -mfpu=fpv4-sp-d16
    -mfloat-abi=hard
    -specs=nano.specs
    -specs=nosys.specs
    -lnosys
    -Wl,-Map=${PROJECT_NAME}.map,--cref
    -Wl,--gc-sections
)
